It is not just the gredbyg who have been worked up into a strange frenzy, but the stone-claws as well.
'It is not just the gredbyg who are in a frenzy throughout Máttugard, it would seem. I have just spoken to one of the dwarves at Asbaj-khîrfin who informed me that stone-claws of Máttugard also act strange. They have even been spotted attacking old buildings and pillars with strange runes upon them. I believe we should investigate.
'When we have subdued the frenzied stone-claws and gathered these strange runes, let us continue to the Steepset. A group of dwarves has recently gained control of the throne of Zidir-nesad.'
Strange runes and frenzied stone-claws can both be found in the north-western section of Máttugard.
You should collect the strange runes and defeat the frenzied stone-claws that you encounter.
Varthmath can be found at Zidir-nesad, The Steepset, in Máttugard.
You should talk to Varthmath at Zidir-nesad.
Voina can be found at Zidir-nesad, The Steepset, in Máttugard.
You should give the strange runes to Voina.
Voina can be found at Zidir-nesad, The Steepset, in Máttugard.
You should talk to Voina.